Python Pyqt4模型视图-在表格模型中添加滑块、复选框行编辑

我正在处理一个ui，如下图所示

在 第一列我有一个复选框， 第二列我有一个滑块， 第三个就是文本

应用于函数的滑块值。结果将显示在第三列中

我看不到滑块而不是复选框

输出如图所示

代码：

用户界面：

---

模型用来保存信息，而不是保存视图。如果要自定义视图，应使用代理。默认情况下，如果您将其保存在CheckStateRole角色中，将创建一个复选框，如果您保存在DisplayRole中，它将显示为文本，因此即使您保存小部件，也会显示显示内存地址的_str

您应该做的只是保存数据，即bool、值和文本，然后通过在第二列中创建一个编辑器来创建一个委托，并使其持久化

import sys
from PyQt4 import QtCore, QtGui


class PaletteTableModel(QtCore.QAbstractTableModel):
    def __init__(self, cols=3,colors = [], parent = None):
        super(PaletteTableModel, self).__init__(parent)
        self.__colors = colors
        self.__cols = cols

    def rowCount(self, parent=QtCore.QModelIndex()):
        return len(self.__colors)  

    def columnCount(self, parent=QtCore.QModelIndex()):
        if parent.isValid():
            return 0
        return self.__cols

    def appendRow(self, data):
        self.beginInsertRows(QtCore.QModelIndex(), self.rowCount(), self.rowCount())
        self.__colors.append(data[:])
        self.endInsertRows()

    def flags(self, index):
        fl = QtCore.Qt.NoItemFlags
        if index.isValid():
            fl |= QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEditable
            if index.column() == 0:
                fl |= QtCore.Qt.ItemIsUserCheckable
        return fl

    def data(self, index, role=QtCore.Qt.DisplayRole):        
        if not index.isValid():
            return None
        row = index.row()
        col = index.column()
        if 0 <= row < self.rowCount() and 0<= col < self.columnCount():
            if role  == QtCore.Qt.DisplayRole and 0 < col < self.columnCount():
                return self.__colors[row][col]
            elif role == QtCore.Qt.CheckStateRole and col == 0:
                return QtCore.Qt.Checked if self.__colors[row][0] else QtCore.Qt.Unchecked
        return None

    def setData(self, index, value, role=QtCore.Qt.EditRole):
        if not index.isValid():
            return False
        row = index.row()
        col = index.column()
        if role == QtCore.Qt.CheckStateRole and col == 0:
            self.__colors[row][col] = value == QtCore.Qt.Checked
            return True
        elif role in (QtCore.Qt.DisplayRole, QtCore.Qt.EditRole):
            if 0 < index.column() < self.columnCount():
                self.__colors[row][col] = value
                return True
        return False


class PaletteDelegate(QtGui.QStyledItemDelegate):
    def paint(self, painter, option, index):
        if index.column() == 1:
            view = option.widget
            if isinstance(view, QtGui.QTableView):
                if not view.openPersistentEditor(index):
                    view.openPersistentEditor(index)
        else:
            super(PaletteDelegate, self).paint(painter, option, index)

    def createEditor(self, parent, option, index):
        if index.column() == 1:
            editor = QtGui.QSlider(parent, minimum=10, maximum=30, orientation=QtCore.Qt.Horizontal)
            editor.valueChanged.connect(self.commitEditor)
            return editor
        return super(PaletteDelegate, self).createEditor(parent, option, index)

    def setEditorData(self, editor, index):
        if index.column() == 1:
            val = index.data()
            if isinstance(val, QtCore.QVariant):
                _, val = val.toInt()
            editor.setValue(val)
        else:
            super(PaletteDelegate, self).setEditorData(editor, index)

    def setModelData(self, editor, model, index):
        if index.column() == 1:
            model.setData(index, editor.value())
        else:
            super(PaletteDelegate, self).setModelData(editor,model, index)

    def commitEditor(self):
        editor = self.sender()
        self.commitData.emit(editor)


if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    app.setStyle("plastique")

    tableView = QtGui.QTableView()
    tableView.show()

    row, col = 6, 3

    model = PaletteTableModel(cols=col, parent=tableView)
    tableView.setModel(model)
    tableView.setItemDelegate(PaletteDelegate(tableView))

    for r in range(row):
        data = [True, 20, 'TEST']
        model.appendRow(data)

    sys.exit(app.exec_())

---

谢谢，如何在data和setData函数中获取滑块值？？？@PramitSawant data用于获取模型信息，setData用于更新模型，这是一个getter和setter。如果您想获得第一个滑块中显示的内容，我们必须使用数据方法，但这需要QModelIndex，为此我们使用：printmodel.datamodel.index0，1或printmodel.index0，1.dataif i link sliders and checkbox to database。如果要根据复选框和滑块值进行更新，我应该将update语句放在setData中，还是创建一个新方法来进行更新。。最好的方法是什么？@PramitSawant您希望通过视图更新数据库吗？这就是为什么您不使用QSqlQueryModel或QSqlTableModel的原因，这更容易，因为您意识到视图独立于模型，在我的解决方案中，我修复了错误非常严重的模型，并添加了委托以生成视图。是的。。。我将从数据库中加载复选框和滑块值。一个滑块值的更改可能会反映所有其他滑块和复选框。因此，任何滑块更改都需要更新视图。我可以保留一个按钮来更新数据库视图中的值。您是否有任何链接或文档参考以获取有关学员的更多信息？

import sys
from PyQt4 import QtCore, QtGui


class PaletteTableModel(QtCore.QAbstractTableModel):
    def __init__(self, cols=3,colors = [], parent = None):
        super(PaletteTableModel, self).__init__(parent)
        self.__colors = colors
        self.__cols = cols

    def rowCount(self, parent=QtCore.QModelIndex()):
        return len(self.__colors)  

    def columnCount(self, parent=QtCore.QModelIndex()):
        if parent.isValid():
            return 0
        return self.__cols

    def appendRow(self, data):
        self.beginInsertRows(QtCore.QModelIndex(), self.rowCount(), self.rowCount())
        self.__colors.append(data[:])
        self.endInsertRows()

    def flags(self, index):
        fl = QtCore.Qt.NoItemFlags
        if index.isValid():
            fl |= QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEditable
            if index.column() == 0:
                fl |= QtCore.Qt.ItemIsUserCheckable
        return fl

    def data(self, index, role=QtCore.Qt.DisplayRole):        
        if not index.isValid():
            return None
        row = index.row()
        col = index.column()
        if 0 <= row < self.rowCount() and 0<= col < self.columnCount():
            if role  == QtCore.Qt.DisplayRole and 0 < col < self.columnCount():
                return self.__colors[row][col]
            elif role == QtCore.Qt.CheckStateRole and col == 0:
                return QtCore.Qt.Checked if self.__colors[row][0] else QtCore.Qt.Unchecked
        return None

    def setData(self, index, value, role=QtCore.Qt.EditRole):
        if not index.isValid():
            return False
        row = index.row()
        col = index.column()
        if role == QtCore.Qt.CheckStateRole and col == 0:
            self.__colors[row][col] = value == QtCore.Qt.Checked
            return True
        elif role in (QtCore.Qt.DisplayRole, QtCore.Qt.EditRole):
            if 0 < index.column() < self.columnCount():
                self.__colors[row][col] = value
                return True
        return False


class PaletteDelegate(QtGui.QStyledItemDelegate):
    def paint(self, painter, option, index):
        if index.column() == 1:
            view = option.widget
            if isinstance(view, QtGui.QTableView):
                if not view.openPersistentEditor(index):
                    view.openPersistentEditor(index)
        else:
            super(PaletteDelegate, self).paint(painter, option, index)

    def createEditor(self, parent, option, index):
        if index.column() == 1:
            editor = QtGui.QSlider(parent, minimum=10, maximum=30, orientation=QtCore.Qt.Horizontal)
            editor.valueChanged.connect(self.commitEditor)
            return editor
        return super(PaletteDelegate, self).createEditor(parent, option, index)

    def setEditorData(self, editor, index):
        if index.column() == 1:
            val = index.data()
            if isinstance(val, QtCore.QVariant):
                _, val = val.toInt()
            editor.setValue(val)
        else:
            super(PaletteDelegate, self).setEditorData(editor, index)

    def setModelData(self, editor, model, index):
        if index.column() == 1:
            model.setData(index, editor.value())
        else:
            super(PaletteDelegate, self).setModelData(editor,model, index)

    def commitEditor(self):
        editor = self.sender()
        self.commitData.emit(editor)


if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    app.setStyle("plastique")

    tableView = QtGui.QTableView()
    tableView.show()

    row, col = 6, 3

    model = PaletteTableModel(cols=col, parent=tableView)
    tableView.setModel(model)
    tableView.setItemDelegate(PaletteDelegate(tableView))

    for r in range(row):
        data = [True, 20, 'TEST']
        model.appendRow(data)

    sys.exit(app.exec_())